155945216 has 72 divisors (see below), whose sum is σ = 376750080. Its totient is φ = 62889984.

The previous prime is 155945203. The next prime is 155945243. The reversal of 155945216 is 612549551.

It is a self number, because there is not a number n which added to its sum of digits gives 155945216.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27905 + ... + 33023.

It is an arithmetic number, because the mean of its divisors is an integer number (5232640).

Almost surely, 2^155945216 is an apocalyptic number.

155945216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 155945216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (188375040).

155945216 is an abundant number, since it is smaller than the sum of its proper divisors (220804864).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

155945216 is an equidigital number, since it uses as much as digits as its factorization.

155945216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5159 (or 5145 counting only the distinct ones).

The product of its digits is 54000, while the sum is 38.

The square root of 155945216 is about 12487.8026890242. The cubic root of 155945216 is about 538.2582380359.

The spelling of 155945216 in words is "one hundred fifty-five million, nine hundred forty-five thousand, two hundred sixteen".